You invest in a stock for 4 years and achieve the following rates of return. The...

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You invest in a stock for 4 years and achieve the following rates of return. The arithmetic average return over the 4 year period is 3.11%. What is the standard deviation of returns? Year Return 1 2 3 4 a. 14.42% x Ob. 0.020792 O c. 0.027723 d. 16.65% 19.1% -14.65% 15.38% -7.38% You invest in a stock for 4 years and achieve the following rates of return. The arithmetic average return over the 4 year period is 3.11%. What is the standard deviation of returns? Year Return 1 2 3 4 a. 14.42% x Ob. 0.020792 O c. 0.027723 d. 16.65% 19.1% -14.65% 15.38% -7.38%